Federal Register / Vol. 86, No. 136 / Tuesday, July 20, 2021 / Rules and Regulations 38223 

installation within 550 hours TIS after 

accomplishment of the measurement 

specified in paragraph 3.1. of DGAC AD 

2001–061–053(A) and DGAC AD 2001–283– 

025(A). 

(5) Where the service information referred 

to in DGAC AD 2001–061–053(A) and DGAC 

AD 2001–283–025(A) specifies to perform a 

dye penetrant crack inspection ‘‘if in doubt,’’ 

this AD requires performing a dye penetrant 

inspection. 

(6) Where paragraph 3.2.2. of DGAC AD 

2001–061–053(A) and DGAC AD 2001–283– 

025(A) specifies to do various actions 

specified in paragraphs 3.2.2.a), b), and c) of 

those ADs, for this AD, if any frame is 

cracked, before further flight, repair the 

frame. Acceptable U.S. alternatives to the 

fasteners and materials needed to perform 

repairs or modifications are listed in 

American Eurocopter Engineering Report No. 

AEC/03R–E–005, ‘‘Addendum ASB 53.00.42 

and 53.00.43 AS365’’, dated January 29, 

2003. 

(7) Where the Note in paragraph 3.2.2. of 

DGAC AD 2001–061–053(A) and DGAC AD 

2001–283–025(A) specifies the instructions 

are no longer applicable after a customized 

repair has been carried out, for this AD, 

modifying or repairing the frame constitutes 

terminating action for the requirements of 

this AD. 

(i) Special Flight Permit 

Special flight permits, as described in 14 

CFR 21.197 and 21.199, are prohibited. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (k) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(k) Related Information 

For more information about this AD, 

contact Blaine Williams, Aerospace Engineer, 

Cabin Safety & Environmental Systems 

Section, Los Angeles ACO Branch, 

Compliance & Airworthiness Division, 3960 

Paramount Blvd., Lakewood, CA 90712; 

telephone 562–627–5371; email 

blaine.williams@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Direction Ge ́ne ́rale de l’Aviation Civile 

(DGAC) AD 2001–061–053(A), dated 

February 21, 2001. 

(ii) DGAC AD 2001–283–025(A), dated July 

11, 2001. 

(iii) American Eurocopter Engineering 

Report No. AEC/03R–E–005, ‘‘Addendum 

ASB 53.00.42 and 53.00.43 AS365’’, dated 

January 29, 2003. 

(3) For DGAC AD 2001–061–053(A) and 

DGAC AD 2001–283–025(A), contact the 

European Union Aviation Safety Agency 

(EASA), Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

000; email ADs@easa.europa.eu; internet 

www.easa.europa.eu. You may find these 

DGAC ADs on the EASA website at https:// 

ad.easa.europa.eu. 

(4) For American Eurocopter material 

identified in this AD, contact Airbus 

Helicopters, 2701 N Forum Drive, Grand 

Prairie, TX 75052; telephone 972–641–0000 

or 800–232–0323; fax 972–641–3775; or at 

https://www.airbus.com/helicopters/services/ 

technical-support.html. 

(5) You may view this service information 

at the FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood Pkwy., 

Room 6N–321, Fort Worth, TX 76177. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(6) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

email: fedreg.legal@nara.gov, or go to: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on July 2, 2021. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–15302 Filed 7–19–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0031; Project 

Identifier MCAI–2020–01420–T; Amendment 

39–21625; AD 2021–13–20] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

Bombardier, Inc.) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Airbus Canada Limited Partnership 

Model BD–500–1A10 and BD–500– 

1A11 airplanes. This AD was prompted 

by reports of corrosion on the waste box, 

waste access doubler, and waste service 

door of the rear fuselage due to 

contamination from waste valve leakage. 

This AD requires an inspection for 

corrosion of the waste box, waste access 

doubler, and waste service door, and 

corrective actions if necessary, as 

specified in a Transport Canada Civil 

Aviation (TCCA) AD, which is 

incorporated by reference. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective August 24, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of August 24, 2021. 

ADDRESSES: For material incorporated 

by reference (IBR) in this AD, contact 

TCCA, Transport Canada National 

Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario, K1A 0N5, 

Canada; telephone 888–663–3639; email 

AD-CN@tc.gc.ca; internet https://

tc.canada.ca/en/aviation. You may view 

this IBR material at the FAA, 

Airworthiness Products Section, 

Operational Safety Branch, 2200 South 

216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

It is also available in the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0031. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0031; or in person at Docket Operations 

between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

The AD docket contains this final rule, 

any comments received, and other 

information. The address for Docket 

Operations is U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE, Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Siddeeq Bacchus, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7362; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 


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38224 Federal Register / Vol. 86, No. 136 / Tuesday, July 20, 2021 / Rules and Regulations 

Background 

TCCA, which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2020–42, issued October 16, 2020 

(TCCA AD CF–2020–42) (also referred 

to as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for certain Airbus Canada Limited 

Partnership Model BD–500–1A10 and 

BD–500–1A11 airplanes. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Airbus Canada Limited 

Partnership Model BD–500–1A10 and 

BD–500–1A11 airplanes. The NPRM 

published in the Federal Register on 

February 24, 2021 (86 FR 11173). The 

NPRM was prompted by reports of 

corrosion on the waste box, waste access 

doubler, and waste service door of the 

rear fuselage due to contamination from 

waste valve leakage. The NPRM 

proposed to require an inspection for 

corrosion of the waste box, waste access 

doubler, and waste service door, and 

corrective actions if necessary, as 

specified in TCCA AD CF–2020–42. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comments received on the NPRM 

and the FAA’s response to each 

comment. 

Request To Require Additional Service 

Information 

Delta Air Lines (DAL) asked that 

Airbus Canada Service Bulletin BD500– 

383004, Issue No. 001, dated January 29, 

2021, also be mandated either in the 

proposed AD or in additional 

rulemaking by the FAA and TCCA. DAL 

stated that the proposed AD, as written, 

does not address the root cause of the 

corrosion, which is leakage from the 

waste disposal ball valve. DAL added 

that the actions specified in the 

proposed AD will act as an effective 

method of ensuring that existing 

corrosion is identified and addressed, 

but do not address the root cause of the 

corrosion. DAL stated that Airbus 

Canada Service Bulletin BD500–383004 

would address that root cause by 

providing instructions for the retrofit of 

an improved valve, which resists 

leakage more effectively than the valve 

with the original configuration. DAL 

noted that if fluid leakage from the 

waste servicing system is the root cause 

for corrosion of the fuselage, proactive 

retrofit of the ball valve to the improved 

configuration would properly address 

that root cause. 

The FAA does not agree with the 

commenter. The FAA is currently 

reviewing Airbus Canada Service 

Bulletin BD500–383004, Issue No. 001, 

dated January 29, 2021, and gathering 

more information about the new valve. 

After completing this review the FAA 

might consider further rulemaking. The 

FAA has not changed this AD in this 

regard. 

Request To Clarify Exception to TCCA 

AD CF–2020–42 

DAL asked for clarification that the 

exception identified in paragraph (h) of 

the proposed AD does not deviate from 

the TCCA AD. DAL stated that TCCA 

AD CF–2020–42 and Airbus Canada 

Service Bulletin BD500–536004, Issue 

No. 001, dated August 13, 2020, both 

include instructions for implementation 

of corrective action to documented 

discrepancies, and neither include any 

allowance to defer the corrective action 

beyond the maintenance opportunity in 

which the inspection is performed and 

the corrosion is documented. 

The FAA disagrees that this AD does 

not deviate from the TCCA AD. 

Paragraph (h) of this AD is included as 

an exception to the MCAI because the 

TCCA AD does not explicitly state in 

the ‘‘Compliance’’ or ‘‘Corrective 

Actions’’ sections that when corrosion is 

found, the corrective action of corrosion 

repair must be done before further 

flight. The inclusion of paragraph (h) of 

this AD requires that the corrective 

action is done ‘‘before further flight’’ 

after detection of corrosion, as identified 

in the applicable service information 

specified in TCCA AD CF–2020–42, 

instead of the compliance time specified 

in TCCA AD CF–2020–42 for all 

applicable actions. The FAA has revised 

paragraph (h) of this AD to specify that 

the corrective action (corrosion repair) 

must be done before further flight after 

corrosion is detected. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting this 

final rule as proposed, except for minor 

editorial changes. The FAA has 

determined that these minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

TCCA AD CF–2020–42 describes 

procedures for a general visual 

inspection for corrosion of the waste 

box, waste access doubler, and waste 

service door 146BR of the rear fuselage; 

application of protective coating in the 

waste box area; and corrective actions. 

The corrective actions include repair of 

any corrosion found. This material is 

reasonably available because the 

interested parties have access to it 

through their normal course of business 

or by the means identified in the 

ADDRESSES section. 

Costs of Compliance 

The FAA estimates that this AD 

affects 28 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

8 work-hours × $85 per hour = $680 .......................................................................................... $0 $680 $19,040 

The FAA has received no definitive 

data on which to base the cost estimates 

for the on-condition actions specified in 

this AD. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 


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Federal Register / Vol. 86, No. 136 / Tuesday, July 20, 2021 / Rules and Regulations 38225 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2021–13–20 Airbus Canada Limited 

Partnership (Type Certificate Previously 

Held by C Series Aircraft Limited 

Partnership (CSALP); Bombardier, Inc.): 

Amendment 39–21625; Docket No. 

FAA–2021–0031; Project Identifier 

MCAI–2020–01420–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective August 24, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus Canada Limited 

Partnership (type certificate previously held 

by C Series Aircraft Limited Partnership 

(CSALP); Bombardier, Inc.) Model BD–500– 

1A10 and BD–500–1A11 airplanes, 

certificated in any category, as identified in 

Transport Canada Civil Aviation (TCCA) AD 

CF–2020–42, issued October 16, 2020 (TCCA 

AD CF–2020–42). 

(d) Subject 

Air Transport Association (ATA) of 

America Code 53, Fuselage. 

(e) Reason 

This AD was prompted by reports of 

corrosion on the waste box, waste access 

doubler, and waste service door of the rear 

fuselage due to contamination from waste 

valve leakage. The FAA is issuing this AD to 

address this corrosion, which could lead to 

cracking or holes in the waste box or airplane 

skin, and consequent cabin pressure leakage 

and catastrophic structural damage of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, TCCA AD CF–2020–42. 

(h) Exception to TCCA AD CF–2020–42 

Where TCCA AD CF–2020–42 specifies a 

compliance time of ‘‘Within 14,200 flight 

cycles or 56 months from the aeroplane date 

of manufacture, as identified on the 

identification plate of the aeroplane’’ or 

‘‘Within 9,900 flight cycles or 56 months 

from the aeroplane date of manufacture, as 

identified on the identification plate of the 

aeroplane,’’ depending on airplane 

configuration, to accomplish all applicable 

actions, this AD requires that corrosion repair 

be done before further flight after detection 

of corrosion, as identified in the applicable 

service information specified in TCCA AD 

CF–2020–42. 

(i) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to ATTN: Program Manager, 

Continuing Operational Safety, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531. Before 

using any approved AMOC, notify your 

appropriate principal inspector, or lacking a 

principal inspector, the manager of the local 

flight standards district office/certificate 

holding district office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, New York ACO Branch, 

FAA; or TCCA; or Airbus Canada’s TCCA 

Design Approval Organization (DAO). If 

approved by the DAO, the approval must 

include the DAO-authorized signature. 

(j) Related Information 

For more information about this AD, 

contact Siddeeq Bacchus, Aerospace 

Engineer, Mechanical Systems and 

Administrative Services Section, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7362; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) Transport Canada Civil Aviation (TCCA) 

AD CF–2020–42, issued October 16, 2020. 

(ii) [Reserved] 

(3) For TCCA AD CF–2020–42, contact 

TCCA, Transport Canada National Aircraft 

Certification, 159 Cleopatra Drive, Nepean, 

Ontario K1A 0N5, Canada; telephone 888– 

663–3639; email AD-CN@tc.gc.ca; internet 

https://tc.canada.ca/en/aviation. 

(4) You may view this material at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. This material may be found 

in the AD docket on the internet at https:// 

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0031. 

(5) You may view this material that is 

incorporated by reference at the National 

Archives and Records Administration 

(NARA). For information on the availability 

of this material at NARA, email fedreg.legal@

nara.gov, or go to: https://www.archives.gov/ 

federal-register/cfr/ibr-locations.html. 

Issued on June 18, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–15346 Filed 7–19–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0272; Project 

Identifier MCAI–2020–01485–T; Amendment 

39–21628; AD 2021–14–01] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 


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